Two hours on what mix actually is — mechanically, acoustically, perceptually — with real spectra from Menzel, Merman, Pavarotti and Sutherland.

Dr. Ingo Titze spends two hours making the case that mix is real, and showing you what it is on three levels at once. You will learn why fry, modal, falsetto and whistle behave the way they do, how TA and CT tension trade off as you climb, and why the shape of the vocal fold surface decides whether you get easy vibration or a pressed sound. He then goes acoustic: why belt keeps the second harmonic under the first resonance, what the MRI and mouth-to-head measurements revealed about Menzel, Espinosa and Merman, and how Pavarotti and Sutherland distribute energy instead. Includes an animated explanation of straw phonation and lively debate with the teachers in the room.